Pairing with a Compliance West Hipot Tester and our HTT-1R Function Checker makes a complete TUV Production Test Package. Logic Controlled, One-button testing. LED indicators. Buzzer upon failure, test terminates. AC output. Constant current delivers 25 amps to any ground circuit with resistance of 0 to 0.1ohm. Virtual voltage sense circuit. ignores resistance of test leads for accuracy. NEMA 5-15 Receptacle for plugging in the device being tested. Universal receptacle available for testing products with International plugs, order Option 30AC-T-W. 0.1ohm calibration resistor mounted on rear panel. Designed for TUV, NEMKO and CE Safety Agency production line testing, including IEC601.